Lock.



Patented Sept. 4; I900.

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s. NELSON & E; W000.

v LOCK. (Application filed Dec. 1, 109a.)

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No. 657, 44L Patented Sept. 4, I900.

S. ME LSON & ELWOQD.

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(Application filed Dec. 1, 1899.) (in Model.) 2 Sheefs-Sheat 2.

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. aitiuff UNITED STATES PATENT OFFICE.

SCOTT NELSON AND ELIJAH WOOD, OF BROOKSTON, INDIANA.

LOCK.

SPECIFICATION forming part of Letters Patent N 0. 657,442, dated September 4, 1900.

- A lication filed December 1, 1899. Serial No, 738,892. No model.) i

To all whom it may concern.-

Be it known that We, SCOTT NELSON and ELIJ AH D, citizens of the United States, residing at Brookston, in the county of White and State of Indiana, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

Our invention relates to locks; and its object is to provide a simple and inexpensive lock which may be quickly applied to a door with little labor and which requires no inclosing shield or casing. i

The novel features ofthe device will befully described hereinafter, and defined in the appended claims, in connection with the accompanying drawings, in which Figure 1 is an elevation of a part of door provided with our improved lock mechanism, the door being broken away to show the lock. Fig. 2 is an edge view of the door. Fig. 3 is a side elevation of the bolt or plunger of the lock detached. Fig. 4 is an elevation of a slotted disk which supports the plunger and its guides. Figs. 5 and 6 are detail views of parts of the mechanism detached. Figs. 7 and 8 are respectively a side view and a plan of the night-latch forming a part of the lock. Fig. 9 is a side elevation of one of the slotted guides of the night-latch, and Fig. 10 is an end view of the rotatable key-barrel for operating the night-latch.

In applying the lock we form two parallel circular holes 1 and 2 in the edge of the door and recess the front edge of the door to receive the face-plate 3, said plate having rec tangular openings 4 and 5 for the bolts and side openings 6 and 7 for the guides.

Within the opening 1 is located a disk 8, having a central opening 9 and diametricallyopposite slots 10. Through the opening 9 extends a plunger 11, carrying a bolt 12 at its outer end. A coil-spring 13 surrounds the plunger, one end of said spring bearing against the bolt 12 and the other end against the disk 8. In rear of the disk 8 the inner end of the plunger is detachably secured by a screw 14 to a yoke or frame 15, which is formed with an elongated opening 16,through which the axial support of the hub passes. The yoke 15 is provided at its rear end with a roller. 17, adapted to be struck by a contact device 18, projecting from the hub 19 of the knob-support. At each side of the plunger 11 is arranged a guide comprising an elongated strip 20, formed at its inner end with an eye 21 and shouldered at its outer end 22 to fit the openings 6 in the face-plate. Each of the guides is also notched at its opposite edges, as shown at 23, to fit the slots 10 of the disk 8.

The hub 19 is formed with lateral extensions 24, over which the eyes 21 of the guides fit to support the inner ends of said guides.

The operation of the lock as thus far described will be obvious from the drawings in connection with the above description. When the hub 19 is turned by the knob (not shown) the rounded contact device 18 will strike the roller 17 and force the bolt inward, the spring 13 serving to retract the plunger as soon as the knob is released.

I The plunger maybe reversed by removing the screw 14.

Referring now to the night-latch device, (shown at the lower part of Fig. 1 and in Figs. 7 to 10, inclusive,) 24 designates a sliding bolt having its under surface cut away to form an incline 25 and provided with rackteeth 26. From opposite sides of the bolt project pins 27, which enter elongated slots 28, formed in guide-plates 29. These guides are formed at their inner ends with eyes 30, which fit over the'ends of the key-barrel 31, and their front ends 32 are shouldered to fit the openings 7 in the face-plate 3. The keybarre131 is provided on a part of its periphery with teeth 32, which mesh with the teeth 26 of the bolt, and when the barrel is rotated by a suitable key the bolt is operated, as will be readily seen from the illustration.

It will be observed that we avoid the usual mortising of the door and employ no casing or inclosing shield, thus reducing the cost of the device materially.

We claim- 1. As an improved article of manufacture, a casingless lock consisting of a plate and guide strips extending therefrom, a disk having slots to receive the guidestrips, a hub revolubly carried by said strips, a yoke connected with the bolt, the bolt arranged to extend through the plate, and through a hole in the disk, and an axial support for said hula) in the inner end of the yoke, and means for operating said bolt through the rotation of said hub, substantially as shown and described. v

2; A casingless lock, comprising a plate, a

disk, guide-strips held in said Plait-e and disk, 5

a bolt arranged to work through the plate and disk, a spring between the plate and.

disk, a detachable yoke connected with the bolt and having an elongated opening, a hub having an axial support passed through the opening of theyoke, and lateral extensions over which fit eyes on the guide-strips, all

substantially as and for the purpose specified.

3. In a lock, the combination with a sliding bolt provided with laterally-projecting pins, and formed on its under surface with rackteeth, of guides arranged at opposite sides of the bolt, and formed with elongated slots,

and a rotatable key-barrel provided with teeth to engage the teeth on the bolt.

In testimony whereof We aifix our signatures in presence of two witnesses.

SCOTT NELSON. ELIJAH WOOD.

Witnesses:

WINNIE L. W001), MANDA M. WOOD. 

